EN 1.4005 Stainless Steel vs. EN 1.4021 Stainless Steel
Both EN 1.4005 stainless steel and EN 1.4021 stainless steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.4005 stainless steel and the bottom bar is EN 1.4021 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 13 to 21 | |
| 11 to 17 |
| Fatigue Strength, MPa | 240 to 290 | |
| 240 to 380 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 390 to 450 | |
| 390 to 530 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 750 | |
| 630 to 880 |
| Tensile Strength: Yield (Proof), MPa | 370 to 500 | |
| 390 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 760 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 30 |
| Thermal Expansion, µm/m-K | 10 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 7.0 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 1.9 |
| Embodied Energy, MJ/kg | 28 | |
| 27 |
| Embodied Water, L/kg | 100 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 14 | |
| 13 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 90 to 110 | |
| 88 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 350 to 650 | |
| 400 to 1160 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 23 to 27 | |
| 23 to 31 |
| Strength to Weight: Bending, points | 21 to 24 | |
| 21 to 26 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 8.1 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 22 to 31 |
Alloy Composition
| Carbon (C), % | 0.060 to 0.15 | |
| 0.16 to 0.25 |
| Chromium (Cr), % | 12 to 14 | |
| 12 to 14 |
| Iron (Fe), % | 82.4 to 87.8 | |
| 83.2 to 87.8 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 to 0.6 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0.15 to 0.35 | |
| 0 to 0.015 |